How to compare YTD and monthly data in same chart?

[cheny134]

I have a dataset like this.

Date	Pcs	Size
2019/1/1	100	S
2019/2/1	200	S
2019/3/1	300	L
2019/4/1	100	L
2019/5/1	200	L
2019/6/1	300	L
2019/7/1	100	M
2019/8/1	200	M
2019/8/5	300	S
2019/8/10	100	L

How do I create a chart like this to comapre the % of Size (by pcs) in terms of specific month and YTD?

For example, in Aug --> S: 50%, M: 33%, L: 16%

                          YTD--> S: 32%, M: 16%, L: 53%

Thank you.

[Greg_Deckler]

You will likely need to use the Disconnected Table Trick for this as this article demonstrates: https://community.powerbi.com/t5/Community-Blog/Solving-Attendance-with-the-Disconnected-Table-Trick...

[cheny134]

Hi Greg,

Thanks for your reply. But I don't know how to apply Disconnected Table in my case. Can you give me more guidence? Tahnk you!